Bosch Rexroth | H-4WMM32E5XV
H-4WMM32E5X//V
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The H-4WMM32E5X//V directional spool valve is manufactured by Bosch Rexroth for the WM Directional Spool Valves series and is applied to route pressurized fluid in hydraulic automation circuits. It is built to the nominal size 32 and uses the spool symbol E to indicate its flow paths. Operation is by a hand lever, and a spring return drives the spool back with a 150 N restoring force once the lever is released. Each side of the lever travels through a 25° actuating angle, giving clear mechanical feedback. The component provides four main ports arranged to the ISO 4401-10-09-0-05 porting pattern. Installation relies on M20 × 80 mounting screws tightened to 160 Nm, and FKM seals are fitted to resist hydraulic oil.
For circuit performance, the valve sustains up to 350 bar on ports a, b, and p while the tank port tolerates 250 bar. The hydraulic passages accommodate a maximum flow of 1100 l/min, and when the E spool is used at 350 bar the permissible flow is 680 l/min to maintain stable pressure drop. Fluid cleanliness must be kept to ISO 4406 20/18/15 to avoid accelerated wear of the sliding surfaces and seals. These ratings allow the valve to handle high-capacity cylinders or motors without excessive pressure loss or heat, ensuring predictable switching under demanding industrial duty cycles. The wide flow margin lets engineers integrate large displacement pumps while maintaining control accuracy, and the pressure ceiling aligns with common high-pressure systems.
Technical Specifications
Actuating Angle (each Side)
25°
Actuating Force (spring Return)
150 N
Actuation
Hand Lever
Cleanliness Class
ISO 4406 20/18/15
Main Ports
4
Maximum Flow
1100 l/min
Maximum Operating Pressure (a/b/p)
350 bar
Maximum Tank Port Pressure (t)
250 bar
Mounting Screw Thread
M20 x 80
Mounting Screw Torque
160 Nm
Nominal Size
32
Permissible Flow (spool E, 350 Bar)
680 l/min
Porting Pattern
ISO 4401-10-09-0-05
Return Mechanism
Spring Return
Seal Material
FKM
Spool Symbol
E
1620 Old Apex Road
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